you want to see detroit's problem, look at this graph. in 1950, there were almost 2 million people in detroit, 2 million. now that number is down to around the 700,000, which means, when your city is shrinking like that, you end up with an eroding tax base. incapable, completely unable to pay off the pension costs that were incurred. and also not just pensions, but city services, infrastructure, all of it. in comparison, over that same period of time, new york has seen its population grow by more than half a million people, it's not been detroit. and another thing, detroit's economy has been nothing short of catastrophic. according to the city's own bankruptcy court declaration, the city lost approximately 80% of its manufacturing base. new york's economy by contrast has been booming. booming under bloomberg for better or worse. the key industry finance remains atop the world. one factor is that the fact that the city remains utterly and unbelievably racially segregated. this is a map of detroit, with dots corresponding for neighborhoods.